The World of Light and Colour explains the properties of light, the nature of light when passing through various media, and natural phenomena related to light such as rainbows and the colours of the sky.
Electricity in Everyday Life presents the generation of electricity using natural resources such as petroleum, gas and coal. We also explain alternating and direct current. Students will learn the operation of electricity generators such as dry cells, batteries, fuel cells, solar cells, and the dynamo, as well as the causes of short circuits.
Carbohydrates presents the composition of carbohydrates, the chemical structure of a single sugar molecule, a double sugar molecule, the digestion process of starch and the accumalation of fat in the body.
Food Preservation presents various simple methods for preserving food, such as pickling, sugar preservation, drying, chemical preservation, pasteurization, UHT, sterillization, freezing and irradiation.
Chemicals in Food demonstrates the use of toxic substances in food production such as insecticides, herbicides and formalin. We explain their negative effects on health, and suggest how to avoid eating toxic substances.